Felodipine
Felodipine is a vasoselective dihydropyridine calcium channel blocker for essential hypertension treatment. This aromatic nitrogen-heterocycle classifies under HTS 2933.99.53.00 as a cardiovascular drug in bulk form. Imported as free base or specific polymorphs for extended-release formulations.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If ester function predominates in classification
Chapter notes classify esters with acid-function compound occurring last numerically.
If for research chemical grade (<pharma purity)
Non-pharmaceutical preparations of organic compounds fall under mixtures heading.
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Import Tips & Compliance
• Form II (stable) preferred - include XRPD pattern in COA to verify crystal structure
• Low dose drug (<10mg) requires enhanced content uniformity documentation
• Avoid bulk cardboard drums - use HDPE-lined fiber drums per IPEC standards
Related Products under HTS 2933.99.53.00
Diltiazem Hydrochloride
Diltiazem hydrochloride is a benzothiazepine derivative calcium channel antagonist used for hypertension, angina, and arrhythmias. Its nitrogen-containing heterocyclic structure qualifies it for HTS 2933.99.53.00 as an aromatic cardiovascular drug. Imported typically as bulk API powder for tablet manufacturing.
Isradipine
Isradipine, a 1,4-dihydropyridine derivative, selectively blocks L-type calcium channels for hypertension therapy. Its nitrogen-heterocyclic aromatic structure fits HTS 2933.99.53.00 as a cardiovascular drug API. Typically imported as micronized powder for tablet coating.
Nifedipine
Nifedipine is the prototype dihydropyridine calcium channel blocker used for angina and hypertension. This nitro-substituted aromatic heterocycle with nitrogen hetero-atoms classifies under HTS 2933.99.53.00. Bulk API imported under nitrogen atmosphere due to light sensitivity.
Nimodipine
Nimodipine is a lipophilic 1,4-dihydropyridine indicated for cerebral vasospasm prevention post-subarachnoid hemorrhage. As a nitrogen-heterocyclic cardiovascular drug, it falls under HTS 2933.99.53.00. Imported as oily liquid or powder for IV and oral formulations.
Pravastatin Sodium
Pravastatin sodium, a hydrophilic HMG-CoA reductase inhibitor, lowers LDL cholesterol in cardiovascular disease prevention. Its complex nitrogen-heterocyclic structure qualifies under HTS 2933.99.53.00 as a cardiovascular drug. Sodium salt form imported as spray-dried amorphous powder.
Clopidogrel Bisulfate
Clopidogrel bisulfate, a thienopyridine P2Y12 inhibitor, prevents thrombotic events in cardiovascular patients. This aromatic nitrogen-heterocycle classifies under HTS 2933.99.53.00 as a cardiovascular antiplatelet drug. Form I crystalline powder imported for tablet manufacture.